package com.foreknow.demo13;

import com.foreknow.demo10.OverLoad;

/**
 * 订单类  Order
 */
public class Order {
    private String orderId;//订单编号
    private double total;//订单总额
    private OrderItem[] items;//保存多个订单项

    public Order(String orderId){
        this.orderId=orderId;
        this.items= new OrderItem[3];
    }

    public String getOrderId() {
        return orderId;
    }

    public void setOrderId(String orderId) {
        this.orderId = orderId;
    }

    public double getTotal() {
        //调用计算总额的方法
        calTotal();
        return total;//返回计算后的总额
    }

    public void setTotal(double total) {
        this.total = total;
    }

    public OrderItem[] getItems() {
        return items;
    }

    //通过下标将OrderItem对象保存OrderItem[]数组中   i表示数组的下标
    public void setItems(OrderItem items,int i) {
        this.items[i] = items;
    }

    /**
     * 计算订单总额 = 单价*数量
     */
    public void calTotal(){
        double total =0;
        //对数组进行遍历
        if (items!=null){
            for (int i= 0;i<items.length;i++){
                total+=items[i].getNum()*items[i].getPprice();
            }
        }
        this.total=total;
    }
}
